Numbers of electrons in shells

haha that seemed to be the number 1 topic in my first week of lessons. everyone were like ''so it's all lies, shall we tell the GCSE-ers it's all lies''

So, 15 year olds, today we're going to be talking about the spin operator, $m_s$, but remember, the electrons aren't really "spinning", it's just a term for intrinsic angular momentum. Next week we'll be covering degeneracy and the Bohr model of the hydrogenic atom.